Spool has 2 parts, a male & female half, the two halves thread together to form the spool. Spool was specifically designed to work with the Bambu AMS unit.
With good bridge settings, should print with no supports. 0.2mm layer height recommended.
1/18/2024 Update: New version of the spool uploaded with better tolerances in the threads.
The author marked this model as their own original creation.